Abstract
We considered the factors due to which the dependences between the uranium–oxygen distances R 0 and the frequencies of valence vibrations νas for complex compounds of uranyl are described by two independent expressions generally represented by equations of the type R 0 = a + bνas −2/3 (b > 0) with the coefficients a and b differing in the regions R 0 < 0.178 nm and R 0 > 0.178 nm. It is shown that the reason is that there is a mutual effect of the ligands in the uranyl complex responsible for different partial contributions of the uranium orbitals and of the atoms of the first coordination sphere to the chemical bonding.
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Syt'ko, V.V., Kabaeva, E.N. Special Features of the Correlation between the Uranium–Oxygen Interatomic Distances and the Frequencies of the Valence Vibrations of the UO2 2+ Group in Complex Compounds of Uranyl. Journal of Applied Spectroscopy 69, 566–570 (2002). https://doi.org/10.1023/A:1020656132547
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DOI: https://doi.org/10.1023/A:1020656132547